Statıstıcs I (ENG)
Ünite Sınavı Soruları
- 20 soru
- Soru metinleri açık; şıklar ve cevap anahtarı uygulamada
- 1
Which of the following is the differences between the third and the first quartiles?
- 2
Which of the following statement is not true about "percentiles"?
- 3
The number of the books have been read by the students in a year are given as follows; 10, 11, 11, 12, 14, 17, 18, 19, 20.
What is the range of the number of books have been read by students in this study?
- 4
Which of the following is not true about box plot?
- 5
The data set: [20,20,20,25,25,30,35,35,40,40,45,45] What is the interquartile range of the data set above?
- 6
A bakery employs 10 people. The number of years’ experience that the employees of the company have is the following: 0, 0, 2, 4, 5, 8, 15, 17, 20, 24. What is the 80th percentile of the data?
- 7
Data : 4, 4, 5, 5, 5, 15, 15, 18, 19, 15, 4, 5, 14, 14, 17, 17, 26, 26, 22, 22. What is the range of this data ?
- 8
I. The mean is pulled in the direction of the tail.
II. The median falls between the mode and the mean.
III. The mean, median, and mode are all the same.
If the distribution is left skewed, having a long tail in negative direction and a single peak, which of the statements above are true?
- 9
The exam points of the students in a math course are as follows;
45, 53, 67, 74, 88, 88, 95, 95, 100.
Which of the following is the sample standard deviation of the data?
- 10
During a sales season, the five salesmen in a mobile phone company sold the following numbers of mobile phone: 9, 15, 8, 24, 30. What is the range of the number of sold mobile phones?
- 11
A bakery employs 10 people. The number of years’ experience that the employees of the company have is the following: 0, 0, 2, 4, 5, 8, 15, 17, 20, 24. What is the interquartile range of the data?
- 12
A sample data set is given as follows; [14,15,15,16,17,18,20,21,22]
Which of the following is the Pearson’s coefficient of skewness (PCS) value of the sample data set given above?
- 13
Data format : (class, class interval, frequency, cumulative frequency) ; data : (1, 100 up to 200, 5, 5), (2, 200 up to 300, 10, 14), (3, 300 up to 400, 16, 30), (4, 400 up to 500, 20, 50), (5, 500 up to 600, 10, 60) ; what is the 40th percentile of these data ?
- 14
During a festival, the five bar tenders in the festival area sold the following number of beers in three days : 9540, 3600, 5566, 12345 and 8745. What is the range of the beers sold during the festival?
- 15
Which of the following is the most important and widely used measure of variability in statistics ?
- 16
Which of the following is not true about range?
- 17
The number of houses sold by each of the 10 estate agents during a particular 6 months period are 1, 4, 7, 6, 2, 10, 10, 3, 8, 9. What is the range of the data?
- 18
During a sales season, the fifteen salesmen in a computer company sold the following numbers of computers: 7, 11, 5, 12, 17, 6, 13, 9, 8, 4, 23, 12, 7, 6, 11. What is the range of the number of sold computers?
- 19
Which of the following is the most important and widely used measure of variability in statistics?
- 20
A petrol company collected the data about the amount of fuel (tons) sold on two cities in a given Saturday. In each city the company has ten gas stations. The data is as follows.
City A: 3, 5, 6, 2, 7, 9, 8, 1, 4, 8
City B: 1, 4, 6, 2, 7, 19, 8, 1, 2, 18Which of the followings is the sample mean of the city A?